Bottle cap with filter



FIG. 1 is a front perspective view;

FIG. 2 is a bottom plan view;

FIG. 3 is a left side elevation view, the right side being a mirror image thereof; and,

FIG. 4 is a top plan view.

The broken lines illustrate environmental structure that does not form part of the claimed design. 

CLAIM We claim the ornamental design for a bottle cap with filter, as shown and described. 